Power Source DC 18V±10% AC:110-240V Assurance_temperature -40°C ~ +50°C Camera 1/3 Lens F=2; Angle:92.8 degree Min Illumination 0.1 Lux Monitor Handset: CM-02NLRG/CM-02NLRM/CM-02NLRH; Hand-free:CM-02NLRI/CM-02NLRJ/CM-02NLRV (b/w or color) Max_Wiring Distance RVV4*0.5 Copper Core Coaxial for 50m, RVV2*0.5 Coaxial and 75-5 video wire for up to 200m Dimension 166(w) X 108(h) X 38(d) mm Tv System PAL or NTSC Ring Bell Chord music Wiring 4 wires in polarity. ( include Monitor and GND ) Call Function Call between monitors is available Extension 400 apartments/door station. Max. 4800 apartments are available in NETWORK system. LED 0.1 Lux; Revolusion >450 Specification Feature>> ?Talk back, indoor phone voluntary supervising, confidential conversation, emergency alarm functions. ?Three chord melody rings are optional. ?One door station can connect with 400 apartments. Video and audio indoor phones are compatible. ?Handsets and hand-free indoor phones are optional. B/w or color are optional. One main indoor phone and 3 extra indoor phones are available for each apartment. Indoor phone with function of public message receiving and 8 zones alarm setting are optional. ?An addition video door station can be connected in each apartment for second time confirmation. ?Indoor phone with security function: indoor phone is with 8 zones alarm ports, which can be connected with all kinds of alarm detectors, such as gas leaking, fire alarm, thief, emergency button. Users can set or delete or change the alarms protection information and messages. Checking and printing are available in the computer. ?Door station with card reader function and keypad function are optional. Id cards can be registered and deleted by pressing the key button of the door station, so as the patrol cards. Information on users in or out gate and patrol records can be read and printed in management computer. ?The network function in this system is available for both audio and video systems. The management unit can automatic supervise and record every entrance. The system can provide friendly interface system software on windows 98 & windwos 2000, you can check users registration files, alarm information and records for users sensitive card and reading cards, so as the electronic map of the region. ?Management unit or wall station: the system can provide network function through connecting door station with management unit or wall station. If more management units or wall stations needed, just add extra switcher SW-03N, one communication channel is provided for this network system. ?Wall station can unlock by password or by sensitive card. Indoor phone can unlock door for wall stations. ?System capacity: 32 door stations available, max. system capacity can be up to 96 door stations by adding digital repeaters RS-485, E-01R and video amplifier VM-03N. ?Thy system is compatible with audio and video NL1 systems and CM-06L villa system in network function. ?Specific functions can be added for individuation design at will.